P1668
Fuel Injector 3 Mechanical Fault
Severity
⚠️ MediumCan you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–50 (est.)
Symptoms
- Rough engine operation
- Power Loss
- Increased fuel consumption
- Misfire in cylinder 3
- Check Engine Light Is On
Causes
- Nozzle clogged
- Mechanical damage to the injector
- Wear of injector components
- Problems with wiring to the injector
- Low fuel pressure
How to Fix
- Check the condition of the cylinder 3 injector
- Clean or replace the injector
- Check the integrity of the wiring harness
- Diagnose the fuel system
- Check the pressure in the fuel rail